Meet Solar Ember :D
In both pony and Equestria Girls form :3

Ember is a demon pony and succubus that used to be very mean and controlling, but is trying to learn to be good after realising how wrong her past behaviour was. She might not fully GET the whole "doing good" thing as her solutions towards trying to do good can come across as a bit... crass, but she means well xD

Despite this she does genuinely try to mean well an do good, and horribly regrets how she acted in her past. She's also very keen to try and make friends with new ponies as well.

Due to her also being a succubus, she is also VERY shameless and flirty with other ponies, often being very teasing when she comes across someone she likes. She hopes to make friends, but she secretly hopes they can be Friends With Benefits too XD